G Unit 4B Test Review - Similarity

Front

What is similarity in geometry?

Back

Similarity in geometry refers to the relationship between two shapes that have the same shape but may differ in size. This means that their corresponding angles are equal and their corresponding sides are in proportion.

Front

What does it mean for two lines to be parallel?

Back

Two lines are parallel if they are in the same plane and do not intersect, no matter how far they are extended.

Front

If two triangles are similar, what can be said about their corresponding angles?

Back

If two triangles are similar, their corresponding angles are equal.

Front

If triangle ABC is similar to triangle DEF, what is the relationship between the sides?

Back

The lengths of the corresponding sides of triangle ABC and triangle DEF are proportional.

Front

What is the scale factor in similar figures?

Back

The scale factor is the ratio of the lengths of corresponding sides of two similar figures.

Front

How do you find the length of a side in a similar triangle?

Back

To find the length of a side in a similar triangle, use the proportion of the corresponding sides and the known lengths.

Front

What is the formula for the area of similar figures?

Back

The area of similar figures is proportional to the square of the scale factor between them.

Front

If the scale factor between two similar triangles is 2:3, what is the ratio of their areas?

Back

The ratio of their areas is 4:9, since it is the square of the scale factor (2^2:3^2).

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where their ratio remains constant.

Front

How can you determine if two triangles are similar using the AA criterion?

Back

Two triangles are similar if two angles of one triangle are equal to two angles of another triangle (AA criterion).